Sen. Ted Cruz says Senate Republicans have done more to damage the GOP’s chances in 2014 than anything else that has happened in Washington.

“The single most damaging thing that has happened to Republicans for 2014 is all of the Senate Republicans coming out attacking the House Republicans, attacking those pushing the effort to defund Obamacare and lining themselves up opposite the American people,” the Texas Republican told CNN in an interview that aired Monday on “New Day”.

Cruz said he hoped his colleagues would change their mind, however.

“I’m hopeful there’ll be some time, some reflection, and that Senate Republican will come back, come back to the principles they believe and they campaigned on. I’m hopeful they’ll put action behind the campaign promises,” Cruz said.

The freshman senator wouldn’t say whether he would redeploy a strategy to defund Obamacare through government spending when the continuing resolution just passed runs out in January, risking another government shutdown.

“There will be time enough to talk about specific strategies and specific tactics,” Cruz said. “What I’m saying is the top priority — there are a lot of politicians in Washington who want to put Obamacare behind us, say, ‘OK, fine. No more. No more discussing Obamacare.’ And you know what? The American people are not satisfied with that.”